The Flash: Meet The Super Villains He's Battled

Alchemy

Voiced by Tobin Bell, this character, nicknamed Dr. Alchemy by Cisco Ramon, is a multi-powered meta-human intent on preparing the world for.... something. To do so, he is tranforming people who were meta-humans in the Flashpoint timeline back to their enhanced selves. First appeared vocally in "Flashpoint" and physically in "Paradox", followed by “Magenta”, “Shade”, “Killer Frost” and “The Present” (Season 3).